Upgrade installer crashed

[Mayank Roy]

Selecting this as a new bug because none of the bugs mentioned suit my situation. I'm upgrading from Ubuntu 15.10 but after one failed installation because of network issues, I restarted the process and weird error messages came regarding some minimal support repositories not being online

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: ubuntu-release-upgrader-core 1:15.10.14.4
ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5
Uname: Linux 4.2.0-35-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CrashDB: ubuntu
Date: Wed Apr 13 03:48:50 2016
InstallationDate: Installed on 2016-01-08 (95 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_IN:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_IN
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to wily on 2016-04-12 (0 days ago)
VarLogDistupgradeAptlog:
 Log time: 2016-04-13 03:37:52.896194
 Log time: 2016-04-13 03:38:07.420991
 Log time: 2016-04-13 03:47:28.711253
 Log time: 2016-04-13 03:48:59.258738
VarLogDistupgradeTermlog: